Ho ho ho. Can O WORMS and part of the continuing reason these RSAs need to go and you should hang onto your NH res/non-res P&RLs.
"215-C:35 Loaded Firearms Forbidden. – No person shall carry on a snowmobile, or a trailer towed by same, any firearms unless said firearm is unloaded. This section shall not apply to law enforcement officers carrying firearms in the course of duty or to pistols carried under a permit issued pursuant to the authority of RSA 159."
"215-A:20 Loaded Firearms Forbidden. – No person shall carry on an OHRV, or a trailer towed by same, any firearms unless said firearm is unloaded. This section shall not apply to law enforcement officers carrying firearms in the course of duty or to pistols carried under a permit issued pursuant to the authority of RSA 159."
Show me the exceptions with regard to OHRVs and snowmobiles for "on your own private property." Yes, it's that dopey - but remember, this is a FISH AND GAME law - its roots are all about hunting from vehicles, not about general recreation. Thus it appears intended to cover carry on your own land or not.